All legacy developer accounts are being upgraded to HubSpot’s new unified Developer Platform experience. This migration brings developer tools and resources together into a single HubSpot account, replacing older, separate tools with one consistent experience when building on HubSpot.
What’s changing
Legacy developer accounts will be migrated to the unified Developer Platform. This experience consolidates developer tooling into a single HubSpot account and replaces legacy developer account structures.
After migration, developers will manage apps, extensions, and integrations from one unified experience that supports the latest platform capabilities, including access to newer tools and programs.
This upgrade enables you to:
- Work from a single developer experience
Build and manage apps, UI extensions, and integrations from one HubSpot account. - Access newer platform features
New developer tools, app features, and the Tech Partner program are available only in the unified experience. - Reduce account complexity
Eliminate confusion caused by multiple developer account types and legacy tooling. - Receive improved platform support
Allows HubSpot to focus development and support efforts on a single, modern platform.
Learn more about the unified Developer Platform and the migration process in the developer documentation:
How it works
The migration is designed to be seamless and does not require any manual steps to complete. After the upgrade, we recommend reviewing user access and administrative settings as part of post-migration setup.
Opt in early
If you’d like to move to the unified Developer Platform ahead of your scheduled upgrade, you can opt in at any time by selecting Learn more from the banner at the top of your Developer home page.
Automatic conversion
If you do not opt in before your scheduled migration window, your legacy developer account will be automatically upgraded. No action is required to initiate the change.
Post-upgrade user access review
After the upgrade, you’ll receive an email notification prompting you to review user access. You must confirm that the correct team members are assigned as Core Seat users with Super Admin privileges (limited to two users), which helps avoid potential access issues. Users who have not been assigned a core seat will automatically be provisioned with a developer seat.
Grace period for updates
You’ll have a two-week grace period following the upgrade to adjust administrative settings and user access as needed.
We’ve also published a short walkthrough video that explains what’s changing and what to expect after your account is upgraded:
When is it happening?
The migration to the unified Developer Platform will roll out in phases.
The rollout will begin on March 9, 2026, with all legacy developer accounts expected to be migrated by March 31, 2026.
You’ll receive an email notification once your account has been upgraded.